<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>ScatterGL - ECHARTS-GL</title>
        <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
        <meta name="apple-mobile-web-app-capable" content="yes"> <!-- Fullscreen Landscape on iOS -->
        <link rel="stylesheet" href="./common.css">
    </head>
    <body>
        <div id="main"></div>
        <script src="../node_modules/echarts/dist/echarts.js"></script>
        <script src="../node_modules/echarts/map/js/china.js"></script>
        <script src="../dist/echarts-gl.js"></script>
        <script src="lib/jquery.min.js"></script>
        <script src="js/commonUI.js"></script>
        <script>
            var chart = echarts.init(document.getElementById('main'));

            $.getJSON('data/weibo.json', function (weiboData) {

                weiboData = weiboData.map(function (serieData, idx) {
                    var px = serieData[0] / 1000;
                    var py = serieData[1] / 1000;
                    var res = [[px, py]];

                    for (var i = 2; i < serieData.length; i += 2) {
                        var dx = serieData[i] / 1000;
                        var dy = serieData[i + 1] / 1000;
                        var x = px + dx;
                        var y = py + dy;
                        res.push([x.toFixed(2), y.toFixed(2), 1]);

                        px = x;
                        py = y;
                    }
                    return res;
                });
                chart.setOption(option = {
                    title : {
                        text: '微博签到数据点亮中国',
                        subtext: 'From ThinkGIS',
                        sublink: 'http://www.thinkgis.cn/public/sina',
                        left: 'center',
                        top: 'top',
                        textStyle: {
                            color: '#fff'
                        }
                    },
                    tooltip: {},
                    legend: {
                        left: 'left',
                        data: ['强', '中', '弱'],
                        textStyle: {
                            color: '#ccc'
                        }
                    },
                    geo: {
                        map: 'china',
                        roam: true,
                        label: {
                            emphasis: {
                                show: false
                            }
                        },
                        silent: true,
                        itemStyle: {
                            normal: {
                                areaColor: '#323c48',
                                borderColor: '#111'
                            },
                            emphasis: {
                                areaColor: '#2a333d'
                            }
                        }
                    },
                    series: [{
                        name: '弱',
                        type: 'scatterGL',
                        coordinateSystem: 'geo',
                        symbolSize: 1,
                        itemStyle: {
                            shadowBlur: 2,
                            shadowColor: 'rgba(37, 140, 249, 0.8)',
                            color: 'rgba(37, 140, 249, 0.8)'
                        },
                        data: weiboData[0]
                    }, {
                        name: '中',
                        type: 'scatterGL',
                        coordinateSystem: 'geo',
                        symbolSize: 1,
                        itemStyle: {
                            shadowBlur: 2,
                            shadowColor: 'rgba(14, 241, 242, 0.8)',
                            color: 'rgba(14, 241, 242, 0.8)'
                        },
                        data: weiboData[1]
                    }, {
                        name: '强',
                        type: 'scatterGL',
                        coordinateSystem: 'geo',
                        symbolSize: 1,
                        itemStyle: {
                            shadowBlur: 2,
                            shadowColor: 'rgba(255, 255, 255, 0.8)',
                            color: 'rgba(255, 255, 255, 0.8)'
                        },
                        data: weiboData[2]
                    }]
                });
            });
        </script>
    </body>
</html>